Planet Earth

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Earth

The big blue planet is our home, where water flows and life thrives. No other planet is yet known to have life. Many scientific research satellites are in orbit exploring Earth.

Planet Profile

Mass (kg)............................................5.98 x 10^24
Diameter (km)........................................12756
Mean density (kg/m^3) ...............................5520
Escape velocity (m/sec)..............................11200

Average distance from Sun (AU).......................1
Rotation period (length of day in Earth hours).......23.93
Revolution period (length of year in Earth days).....365.26

Obliquity (tilt of axis in degrees)..................23.4
Orbit inclination (degrees)..........................0
Orbit eccentricity (deviation from circular).........0.017

Mean surface temperature (K).........................281
Maximum surface temperature (K)......................310
Minimum surface temperature (K)......................260

Visual geometric  (reflectivity)...............0.39
Highest point on surface.............................Mount Everest 
                                       (over 8 km above sea-level)
Atmospheric components...............................78% nitrogen, 
                                                     21% oxygen, 
                                                      1% argon
Surface materials.................................... and 
                                                granitic rock and 
                                                altered materials

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is where East meets West at the (0° Longitude); World Time is set . Remember the new millennium started in .

Greenwich lies on the , a few minutes by rail or tube, or a short river cruise from central London. If you want to visit Greenwich and information on visiting London, England then see . There is the famous to visit and the . Just down river is the which is close to

The at Greenwich is in along with the and the (on which the in Washington DC, USA is based). For information on astronomy visit

The starts in Greenwich Park every Spring.

Greenwich has a long heritage; it was the birth place of and his daughters (Bloody Mary) and (The Virgin Queen). All the English monarchs can be found at .

It has seen many famous visitors from through to . This and a lot more in .

For information on all the other places in the world called Greenwich including Greenwich Village, New York City, USA then visit .

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